Videos of white nationalists chanting “Jews will not replace us” surely startled anyone who thought anti-Semitism long dead in the America of 2017. But for others it simply confirmed that old prejudices die hard.

Due to the intense nature and duration of the post-9/11 conflicts, the United States has needed to help an increasingly large pool of veterans who require long-term medical and mental health care. More than 1 million Americans served in the Iraq war alone.

Because climate change is a global phenomenon and its potential effects diverse, understanding the economic impacts is highly complex. Agriculture, fishing, migration, health and tourism could all be affected; in many ways the impacts are likely to be negative, but some could be positive.